The final resting place for the remains of 143 Habsburg royalty.

A pair of giant stone heads represent the ancient Roman saints beheaded here.

This abandoned hospital has a long history, having housed both German and Soviet soldiers in the course of its life.

One of the largest refracting telescopes in the world, and the first built specifically for studying astrophysics.

A former customs station on the border of Germany and the Netherlands.

This public observatory is home to the "celestial cannon," the longest pointable telescope in the world.

A peculiar trapezoidal building covered with wonderful humorous reliefs.

A carved grave marker from the 2nd century is mounted in the alcove wall of this Bavarian church.

A unique, free-floating electric ferry may be the only of its kind in Europe.

What appears to be an ordinary bridge is actually a rare aqueduct.

Home to the world’s oldest seismograph and a four-ton steel ball that makes its own earthquakes.

This red London phone booth once stood in front of Buckingham Palace and was used by the queen.

This museum explores the history of the city's public transportation. Its collection includes the world's oldest preserved electric trolley car.

This mysterious pig iron pillar does not rust, despite being weathered by the elements for centuries.

One of the oldest student jails in Germany.

The remnants of a fictional Viking village film set now serve as an educational and historical hotspot.

This ornate Weser Renaissance house was also the home of an infamous witch hunter.

One of the world's oldest fossil exhibits is on display in a beautiful antique "naturalienkabinett."

A famed artist's inspiring work of peace and tolerance.

The body of at least one victim of a construction accident was left behind in the collapsed pylon, buried under tons of concrete.

A Neolithic celestial calendar standing in a nondescript wheat field.

The best bagels in Berlin are tucked away in an independent bookstore.

Superb sweets await at the first Jewish bakery inducted into Berlin’s prestigious baker’s guild.

This massive steel pyramid can be entered by a set of jagged steps that let visitors stand in its heart.